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See PDF at https://raw.githubusercontent.com/kassu/kassutronics/master/documentation/Quantizer/Quantizer_Build_Docs_1.1A.pdf for explanation about PWM smoothing; essentially a 4-stage RC network but with an eye towards doing it all in one module with WiFi, https://www.adafruit.com/product/2471 Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole THT Kemet EC2 signal relay DPDT non single coil latching through hole M3, height 8, Wuerth electronics 9774010982 (https://katalog.we-online.de/em/datasheet/9774010982.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 20 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/doc2535.pdf#page=164), generated with kicad-footprint-generator Molex KK 396 Interconnect System, old/engineering part number: 26-60-4030, 3 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator JST GH series connector, S22B-PHDSS (http://www.jst-mfg.com/product/pdf/eng/ePHD.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py Infineon, PG-TISON-8-2, 5x6x1.15mm, 1.27mm Pitch, Exposed Paddle, https://www.infineon.com/cms/en/product/packages/PG-TISON/PG-TISON-8-4/ Infineon, PG-TISON-8-5, 8x8x1.1mm, 1mm Pitch, https://www.infineon.com/cms/en/product/packages/PG-TISON/PG-TISON-8-5/ VML0806, Rohm (http://rohmfs.rohm.com/en/techdata_basic/transistor/soldering_condition/VML0806_Soldering_Condition.pdf, http://rohmfs.rohm.com/en/products/databook/package/spec/discrete/vml0806_tr-e.pdf MicroCrystal C3 2.5x3.7mm, https://www.microcrystal.com/fileadmin/Media/Products/RTC/Datasheet/RV-1805-C3.pdf SON, 8 Pin (https://docs.broadcom.com/doc/APDS-9251-001-DS#page=19), generated with kicad-footprint-generator Molex LY 20 series connector, 53398-0771 (http://www.molex.com/pdm_docs/sd/533980271_sd.pdf), generated with kicad-footprint-generator JST ZE series connector, DF3EA-02P-2H (https://www.hirose.com/product/document?clcode=CL0543-0332-0-51&productname=DF3EA-5P-2H(51)&series=DF3&documenttype=2DDrawing&lang=en&documentid=0001163317), generated with kicad-footprint-generator Harting har-flexicon series connector, B15B-ZESK-1D, with boss (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator JST ACH series connector, 504050-0591 (http://www.molex.com/pdm_docs/sd/5040500891_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside blind hole M1.6, height 3.5, Wuerth electronics 9775116960 (https://katalog.we-online.com/em/datasheet/9775116960.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py UQFN, 20 Pin (https://www.analog.com/media/en/technical-documentation/data-sheets/AD7682_7689.pdf), generated with kicad-footprint-generator Hirose DF12C SMD, DF12C3.0-40DS-0.5V, 40 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, 105313-xx02, 2 Pins (http://www.molex.com/pdm_docs/sd/559350530_sd.pdf), generated with kicad-footprint-generator Molex Micro-Fit 3.0 Connector System, 53047-0610, 6 Pins per row (https://cdn.harwin.com/pdfs/M20-781.pdf), generated with kicad-footprint-generator Molex Mini-Universal MATE-N-LOK, old mpn/engineering number: 5566-24A, example for new mpn: 39-28-x24x, 12 Pins per row, Mounting: PCB Mounting Flange (http://www.molex.com/pdm_docs/sd/039291047_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole 2.25mm, height 2.5, Wuerth electronics 9776020960 (https://katalog.we-online.com/em/datasheet/9776020960.pdf), generated with kicad-footprint-generator Inductor SMD 1806 (4516 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSOP-I, 24 Pin (http://www.ti.com/lit/ds/symlink/bq24133.pdf#page=40 Texas Instruments, DSBGA, 3.415x3.535x0.625mm, 64 ball 8x8 area grid, YBG pad definition, https://www.ti.com/lit/ds/symlink/lmg1020.pdf, https://www.ti.com/lit/ml/mxbg078z/mxbg078z.pdf BGA 6 0.4 YFF0006 Texas Instruments, VQFN-HR RNN0018A (http://www.ti.com/lit/ds/symlink/tps568215.pdf QFN, 16 Pin (https://www.renesas.com/eu/en/www/doc/datasheet/isl8117.pdf#page=22), generated with kicad-footprint-generator ipc_noLead_generator.py TDFN, 8 Pin (https://www.nxp.com/docs/en/data-sheet/PCF8523.pdf), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 502426-2410, 24 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam.

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